21440+3757
- Unique Name: 21440+3757SEI1533
- RA: 21 44 05.09
- Dec: +37 56 29.0
- Discoverer: SEI
- Discoverer Number: 1533
- Components:
- First year: 1894
- Last year: 2002
- Observations: 6
- First position angle: 17
- Last position angle: 14
- First separation: 27.9
- Last separation: 25.9
- Mag first component: 11.25
- Mag second component: 12.22
- Spectral type:
- Primary proper motion RA: 10
- Primary proper motion DEC: 5
- Secondary proper motion RA: -11
- Secondary proper motion DEC: -9
- Durchmusterung:
- Notes: